Apparatus for utilizing the waste heat of kilns.



- H. G. LAYNG. APPARATUS FOR UTILIZING THE WASTE HEAT 0P KILNS.

APPLIQATIQH FILED JUNE 4, 1908. 951,191. Patented Mar. 8, 1910;

2 SHEET8SHEET 1.

I witnesses Q H. G. LAYNG.

APPARATUS FOR UTILIZING THE WASTE HEAT 0]? KILNS.

APPLICATION FILED JUNE 4, 190a.

951,191 Patpntd Mar.8, 1910.

to generate the steam to make the down draft kiln.

HENRY e. LAYNG, or NEW YoRK,'1\T. Y.

PATENT OFFICE.

APPABATUS FOR UTILIZING THE WASTE HEAT OF KILNS.

Specification of Letters Patent.

Patented Mar. 8, 1910.

' Application filed June 4,1908. Serial No. 436,602. g

To all whom 'it may concern: I

Be it known that I, HENRY G. LAYNG, a citizen of the United States, anda resident of the borough of Manhattan, city,'county, and State of NewYork, have invented certain new and useful Improvements in Apparatus forUtilizing the Waste Heat of Kilns, of which the following is a--specification, accompanied by drawings.

This invention relates toimprovements in apparatus for utilizing thewaste heat of kilns, niore particularly to apparatus utilizing both k1lnburning and waste heat to make steam and thereafter dry brick or otherclay products. I amnot to be understood as limiting the invention tothese purposes, because it may be used in any connection in which it isfound applicable.

Ordinarily in the art of making bricks or other clay products, the kilnheat, both burnin and waste, is not utilized outside of'the I itself,except occasionally for the purpose of drying the clay products.

The object of my invention is to utilize the heat of the kiln, bothburning and waste, bricks and afterward to dry the same.

According to my invention, I can either use the products of combustionfrom the boiler for dryin the clay products, or I can use the pro netsof combustion of the kiln or I can use both together.

Further objects of my invention will hereinafte'r appear, and to theseends the invention consists of the system substantially 'as hereinafterfully described and claimed in this specification and shown, in theaccompanying drawings, in which- Figure 1 1s a plan view partly inhorizontal section of apparatus embodying the system; and Fig. 2 is alongitudinal sectlonal view on the lines can: and y, y of Fig 1.

Referring to the drawings, Are'presents a kiln, B represents the steamboiler in any suitable style,C is a fan of any suitable design to suckand impel hot gas, as for instance, a booster em, and D is a drier.

' The kiln A may beany kind of a kiln, as a down draft, up draft orcontinuous kiln, and I have shown by way 'of v example a -I providemeans ucts .of combustion from the base or bases 1 hee ack Ei om ende fh flue Fjvhere they connect with the'stacks. "For this purpose I'hayeshown .an outer flue G for conducting the prod- The boiler B maybe ofany'style or type.

of a boiler, shown in this instance as a return tubular boiler havingthe shell M, the grate N, and the stack 0 provided with damper O. Theflue P communicates with the stack 0 or fan 0, or leads directly to thefiues Q, if thefan is omitted.

According to my invention, the hot gases from the kiln are led beneaththe boiler by flue R at a point back or on the sides of the grate bars,so that the heated gases from the kiln will not pass through or over thegrate N to theexclusion of air or other gases for combustion on thegrate. A suitable damper S is provided for controlling the flues L andS, whereby the kiln gases may be around the kiln, with which'the basesof conducted to the boiler or directly to the drier. According to thisconstruction, the kiln gases may be utilized for first heating theboiler, or else they may be led past the boiler to the drier or thestack.

D is any suitable direct or waste heat drier, for utilizing either kilnheats, or boiler heats, or both; The gases are introduced back or besidethe grate bars U in the drier, through the fines or chambers Q, or in awaste heat drier the gases would be led directly through the Ware in thedrier. The grates U are to regenerate or add to the heat in the gasesand obtain the air for combustion directly from the outside with thefuel on the grate bars. The dampers V control the outlets to the fiues Qand serve to regulate flow of the gases and thereby control thetemperature of the. gases for the drier.

The fans W and the stack X are provided to suck'all gases from the kiln,the boiler,

and thedrier grates, and provide an accelerfurnishes the'heat ffor thedrier. When the boiler fire is started, to get steam for the kiln isstarted, the damper S is opened as shown in Fig. 2, and the burning andwaste gases from the kiln are drawn through the boiler and drier, by-means of fiues P and Q. In order toobtain the gases from the kiln, thestack dampers J are closed and dampers I opened. The arrangement ofdampers throughout the apparatus 1s such that any.

desired part may be utilized, from one flue in the kiln to the wholeapparatus. .The dampers and fires are also so arranged that thenecessary heat may be obtained to make steam or to operate the drier,andthis can be regulated exactly as desired- When the kiln is startingup the heat is carried over to the boiler and helps out the boiler fire,and also the drier fires. When the kiln has been burned the heat in thehot bricks of the kiln is utilized in the same way, thereby cutting downthe time of the kilns and utilizing all the heat. The boiler fire willalso supply heat for the drier at all times.

I claim and desire to obtain by Letters I Patent the following:

. thereto having communication with the kiln and with the outlet of theboiler chamber, and means for directing the gases from the kiln throughthe boiler or directly to the drier at will.

2. A system of utilizing the waste heat of kilns, comprising incombination, a kiln having an exit passageway for the heated gases,

a boilerprovided with a firebox or furnace,

and having communication with said exit passageway of the kilnindependently of said firebox or furnace, a drier provided with aheating passageway leading thereto having communication with the kilnand with the outlet of the boiler, means for directmg the gases from thekiln through the boiler or directly to the drier at will, and

means for drawing the heated gases through the drier.

3. Apparatus for utilizing the waste heat of kilns, comprising incombination, a kiln having an exit passa eway for the heated gases, aboiler provi ed with a firebox or furnace, and having communicationwithsaid exit passageway of the kiln independently of said firebox orfurnace, a drier provided with a heating passageway leadin theretohaving communication with the ki 11' and with the outlet of the boilerchamber, means for directing the ases from the kiln through the boileror irectly to the drier at will, and means for drawing the heated gasesthrough the boiler.

4. Apparatus for utilizing the waste heat of kilns, comprising 1ncombination, a kiln having an exit passageway for the heated gases, aboiler provided with a firebox or "furnace, and having communicationwith said exit passageway of the kiln independently of said firebox orfurnace, a drier rovided with a heating passageway lea ing theretohaving communlcation with the kiln and with the outlet of the boilerchamber, means for directing the gases from the kiln throu the boiler ordirectly to the drier at wild, means for drawing the heated gasesthrough the'boiler and means for drawing the heated gases through thedrier.

5. Apparatus for utilizing the waste heat of kilns, comprising incombination, a kiln having an exit passageway for the heated gases, aboiler provided with a firebox or furnace, and having communication withsaid exit passageway of the kiln independently of said firebox orfurnace, a drier provided with a heating passageway, leading theretohaving communication with the kiln and with the outlet of the boilerchamber, means for directing the gases from the kiln through the boileror directly to the drier at will, an auxiliary grate or firebox in theheating passageway leading to the drier, and means the boiler or kilnthrough said'passageway independently of said auxiliary grate orfirebox.

6.. Apparatus for utilizing the waste heat of kilns, comprising incombination, a kiln having an exit passageway for the heated gases, aboiler provided with a firebox or furnace, and having communication withsaid exit passageway of the kiln independently of said firebox orfurnace, a drier pro-' vided with a heating passageway leading theretohaving communication with the kiln and with the outlet of the boiler,means for directing the gases from the kiln throu h the boiler ordirectly to the drier at W1 1, an auxiliary grate or firebox in theheating passageway leading to the drier, means for leading the heatedgases from the boiler or kiln through said passageway independently ofsaid auxiliary grate or firebox, and means for drawing the heated gasesthrough the drier.

7 Apparatus for utilizing the waste heat of kilns, comprising incombination, a kiln having an exit passa eway for the heated gases, aboiler provi ed with a firebox or urnace, and having communication withsaid exit passageway of the kiln independently of said firebox orfurnace, a drier ro vided with a heating passageway leading theretohaving communication with the kiln and with the outlet of the boiler,means for directing the ases from the kiln throng-n 1 the boiler orirectly to the drier at w an auxiliary grate or firebox in the heatingfor leading the heated gases from passageway leading to thedrier, meansfor Intestimony whereof I have signed this leading the heated gases fromthe boiler or specification in the presence of two subkiln through saidpassageway independently scrlbing witnesses, June 1, 1908.

' of said auxiliary grate or firebox, means 'for HENRY G. LAYNG. 5drawing the heated gases throu h-the boiler, Witnesses: v

and means for drawing the" eated gases 7 E. VAN ZANDT,

through the drier. E. LA GAY.

